Filler neck for locomotive rod cups



Nqv. 8, 1927-.

- G. A. PETTIT FILLER NECK FOR LOCOMOTIVE ROD CUPS Filed June 10. 1926INVENTOR Ad ew- I ATTORNEYS Patent ed Nov. 8, 1927.

GEORGE A. IETTIT, NEW ORLEANS, LOUISIANA.

FILLER NECK FOR LOCOMOTIVE ROD CUPS.

Application filed June 10, 1926. Serial No. 115,136.

My invention relates to improvements in filler necks for lubricantreceptacles, such as the rod cups that are used on locomotives, and itconsists in the combinations, constructions and arrangements hereindescribed and claimed.

More specifically described, the present invention contemplates theprovision of an improvement over the filler neck for locomotive rod cupsthat is disclosed in Patent #1,190,84:8 granted to me April 15, 1924,said improvement comprising a filler neck having novel means forlimiting the movement of a ball check valve that is used therein awayfrom its seat and for guiding the ball check valve in its movement underpressure toward its-seat and also for detachably connecting the fillerneck with the nozzle of a suitable lubricant gun. 7

Other objects and advantages of the invention will be apparent from thefollowing description, considered in conjunction with the accompanyingdrawings, in which Figure 1 is a perspective view of a filler neckembodying the present invention applied to a rod cup such as is used ona locomotive,

Figure 2 is a fragmentary vertical section through a portion of the rodcup and through the filler neck as it appears after it has been filledwith a suitable lubricant,

Figure 3 is a fragmentary vertical section through a portion of the rodcup and through the filler neck as it appears before it has beencompletely filled with the lubricant, Figure 3 being taken along a planeextending at right angles with Figure 2, and Figure 4 is a. plan view ofthe improved filler neck with the ball check valve that is used thereinin open position.

In Figure 1, the numeral 1 designates a rod cup having a vertical inletopening 2 in its upper wall formed with a counterbore 3 at its upperend. The improved filler neck comprises a tubular body 4 having anexternally enlarged lower'end portion 5 adapted to fit in thecounterbore 3 so that the bore 6 of the filler neck will registerwiththe inlet opening 2 of the rod cup. The enlarged lower end portion 5of the body of the filler neck may be secured in place in thecounterbore 3 1n any suitable known manner, no means therefore beingshown in the drawings. The bore 6 of the filler neck body is reduced atthe upper end of the fillerneck body at 7 thus producing a circularvalve seat at 8 and an annular shoulder at 9, sad

Y tance tional area with the inlet opening 2 in the upper wall of therod cup. The tubular body of the filler neck is provided'below the levelof the lower and outer edge of the shoulder 9 with a pair ofdiametrically opposite radial openings 10. A hardened steel pin 11 ofgreater length than the outer diameter of the portion of the filler neckbody in which the openings 10 are formed is driven through the openings10 until the end por-- pin 11 extend equal distances tions of the fromthe outer ends of the openings 10. The portions of the pin 11 that arereceived in the openings 10 have a driving fit with'the walls of theopenings 10 and are in fluid tight contact with the walls of the openins 10. The portion ofthe pin 11 that'extends across the bore 6 serves asa stop and a rest for a ball check valve 12 which is loosely disposed inthe upper end portion of the bore 6 between the pin 11 and the valveseat 8. It of course will be understood that the ball check valve 12 isplaced in the upper end portion of the bore (ibefore the body of thefiller neck is secured in the counterbore 3 and before the pin 11 hasbeen projected through the openings 10' to the position shown in thedrawings. The diameter of the ball valve 12 is greater than that of thevalve seat 8 and considerably less than the diameter of the bore 6 belowthe shoulder 9. The diameter of the portion of the pin 11 that extendsacross the bore 6 is less than the diameter of the bore but the sum ofthe diameters of the ball valve and the portion of the pin 11 thatextends across the bore 6 is greater than the diameter of the bore 6below the shoulder 9 so that the ball valve will be prevented frommoving downward from the position shown in Figure 2 in the bore 6 pastthe pin 11.

The diameter of the ball valve 12 is slightly v less than the verticaldistance between the plane of the valve seat 8 and the horizontal planethat is tangent to the highest portion of the pin 11 in the bore 6 sothat limited movement of the ball valve vertically in the bore 6 betweenthe pin 11 and the valve seat 8 is possible. The diame er of the ballvalve 12 preferably is greater than the vertical disbetween the plane ofthe lower edge of the shoulder 9 and the horizontal plane of the 4highest portion of the pin 11 in the bore 6 ments for engaging withslots in the nozzle of a suitable lubricant gnot shown) so that theupper end portlon o the filler neck is adapted for connection with thelubricant gun substantially in the manner of the male member of abayonet joint. 7

From the foregoing description of the various parts of the device, theoperation I so thereof may be readily understood. When a suitablelubricant gun has been attached to the filler neck in the manner justdescribed, the operation of the lubricant gun will cause lubricant toenter the" bore '6 of the filler neck through the reduced upperendportion 7 of the bore and past the ball valve 9 and the portion ofthe pin 11, that extends acrossthe bore into the inlet opening 2 of therod cup. The expansion of the lubricant in the bore of the filler neckafter the filler neck has been filled will force the ball valve 9upwardly from the position shown in Figures 3 and 4 to position toengage with the valve seat 8 and thus to close the upper end of the boreof the'filler neck,

Obviously, the invention-is susceptible of embodiment in forms otherthan that which is illustrated in the accompanying drawings, and Itherefore consider as my own all such modifications and adaptationsthereof as fairly fall within the scope of the appended claims.

I claim 1. vThe combination with a tubular memberjhaving one end flangedinwardly to form an apertured valve seat, said flange having its innerwall splayed toward said aperture, a non-yielding support in saidmember, a

valve in said member in constant contact with said Wall and normally incontact with said support, said valve being movable from said supportalong said wall intovalve closing position by back expansion only ofcompressed lubricant filling said neck.

2. The combination with a tubular member having one end thereof flangedinwardly to form an apertured valve seat, the wall of said flange beingsplayed toward the a erture of said seat, a pin extending diametrical 1yacross said member and having its ends The shoulder 9 will guide theball valve up projecting therethrough, a ball valve in conwardly fromthe position shown in Figures 1 3 and 4 to the position shown in Figure2.

It is intended. that so-called hard grease or other plastic lubricantshall be used in the device and a suflicient quantity of such lubricantwill remain in the upper portion of the bore of the filler neck abovethe pin GEORGE A. PETZHT.

